Germany, Imperial. A Lot of First World War U-Boat Service Postcards

(U-Boot Postkarten). A lot of eight First World War U-Boat service postcards, including one depicting a colour illustration of a U-Boat at sea, the reverse bearing a handwritten inscription and Feldpost marks, posted 22 May 1916, measuring 140 mm (w) x 89 mm (h), with minor creasing evident, in near extremely fine condition; one depicting a black-and-white photo of U-26 at sea, the reverse bearing a handwritten inscription, dated “6. 4. 17.”, with Feldpost marks, measuring 136 mm (w) x 84 mm (h), in extremely fine condition; one depicting merchant submarine “Deutschland” at sea, the reverse bearing a handwritten inscription, dated “28. VIII. 1916”, measuring 137 mm (w) x 85 mm (h), in extremely fine condition; one depicting a touched-up black-and-white image of a small U-Boat at sea, the reverse bearing a handwritten inscription, posted 2 August 1914, measuring 139 mm (w) x 88 mm (h), in extremely fine condition; one depicting a “Nails for the War” campaign U-Boat in Kiel, the reverse bearing a handwritten inscription, poste 3 December 1915, measuring 140 mm (w) x 88 mm (h), in extremely fine condition; one depicting a black-and-white illustration of a U-Boat at sea, flanked by a warship, the reverse bearing a naval veteran’s association mark, unused, measuring 138 mm (w) x 90 mm (h), in extremely fine condition; one depicting U-3 at sea, the reverse unused, measuring 137 mm (w) x 86 mm (h), in extremely fine condition, and; one depicting a black-and-white illustration of U-9 attacking a Royal Navy convoy, the reverse unused, measuring 139 mm (w) x 89 mm (h), in extremely fine condition.